Pneumatic action for self-playing instruments.



35 .tion on the line s2-2 of Fig. 1.

EMORY C. HISOOCK, OF OHIOAGO, ILLINOIS, ASSIG-NOR TO `v\'. CHICAGO, ILLINOIS, A CORPORATION OI" .Playing Instruments, of which the following Y t'icularly to the manner of pneumatic actions, it is now necessary when '30 1 vclosed in the description given below, and

their adjustment is'lost, so that when they l l?. lIMBALL OOM FAN Y, ii ILLINOIS.

PNEUMATIC ACTION FOR SELF-PLAYING NSTRlE'ElENTS.

Specification of Letters 'atent4 Application filed September 25, 1908.

' resented a., ieee. semina remar..

To all whom it may concern.'

Be' it known that I, EMOR'Y C. Hiscooir, a citizen of the United States, residing in Chicago, in thefcounty of Cook and State of Illinois, have invented a' new and useful Improvement in Pneumatic Actions of Selfis a specification- This invention relates to the 4pneumatic actions of self playing instruments, and parsupporting Y the lifters through which the hammers are o erated. In the general construction oft iese repairing or replacing the lifters or the pneumatics, to disengage or remove a considerable'number ofthe lifters,- and in so doing,

are Ireplaced much of the adjustment has to be done over, and generally itjis the case that the adjusting devicesl are numerous and of a kind necessitating considerable work at such times. i

My invention is intended to simplify the construction and reduce the number of parts,

and also to so support 4the litters as to render l it easy to get at and remove any one oft-hem without destroying the adjustment ofthe others. The nature ofthe invention is fully diswill be understood from theA accompanying drawing, in which latter- Figure 1 is a partial'elevation olf an action embldyingmy invention. Fig. 2 is a sec- Fig. 3 shows one of my improved litters detached F ig. 4 is a partial horizontal section.

In said drawing, 5 represents the action,l board supporting the action or striking pneumatics 6. The'latter are arranged in several horizontal rows, one aboveanotlier in the i usual vmanner and the movableside ol' each f' of them is provided with a projecting` arm 7 f having a transverse eye to receive the bent i end 8 at the bottom' of the lifter 9 to be l slipped into it' or out from it. The lifters are arranged in vertical ositions with their ,l lower ends secured in t e eyes of the arms 7, l and at the upper end the litters are provided with bamboo thimbles 10 and 11, iiriiily secured upon them and provided with felt washers 12 and 13 as seen at Fig. 3. The top l thimble and washer rest upon a supporting bar 14 described'inore particularly below, l

' junction with the pneumatica o, the litters and limit the downward movement the lifters and the lower tliimble and washer eentact with said bar and. limit its upward movement. Between the lower thiiiibles und pass through slots 15 formed in a guide 16. The slots 15 are open u on one side shown so that any lifter can staken out oi it in one direction.

rIlhe bar 14 is made in two longitudinal parts 14 and 14, 'thepart 14 being lield by screws 16 against part 14a, and the openings therein through which the litters pass being formed partly-in each part of the bar. in

consequence of this feature, when it is desired to remove a lifter, it is only necessary to remove or loosen the art 14 of the u ier bar, and to disengage t e foot of' the liter from the arm 7 of the pneumatic, and the lifter can then be removed. the other lifters do not need to be disturbed, because they .willvbe retained in position by the slots of bar 16, but if they do fall out, they can be returned at once to noi-mal pesitions witliout any loss of adjustment.

The striker which actuates' the key 17 o" the instrument is shown at 18, and receives motion from the lifter through. a pivoted lever 19- in the usual manner'.

I-claim:--

1. The pneumatic action for seitl playing .instruments wherein are combined a series oi,

neumaties, a serle-s of vertically arranged litters for actuating the piano action while playing automatically, and a horizontal longitudinally divided bar between the parts of which bearingsgnelzormed for said litters, one side of the bar being removable, and the litters bein-g readily and separately detachable hom the pneumetics.

2. The pneumatic action for self playin instruments wherein are combined a seri` iiieuinatics, a sei-ies of vertically arrai 'e lifter-s for actuating the piano action while plziying automaticall f, a horizontal longitu-v dinally divided bar between the parts of which bearings are formed for said litters, and a notched bar 16 stayingr the litters between their ends, one side oi' the divided bar being removable and the litters being-readily 'and separately detachable from the pneumatic-s.

EMGRY C. Ii'lSCOCK. Witnesses Il. M. MUNDAY, PEARL Asnaiis.

In doing this,

l Gl) 

